#include "stdafx.h"
#include "xinlistedit.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

CXInListEdit::CXInListEdit()
{
	m_nRow = -1;
	m_nCol = -1;
	m_bESC = FALSE;
	m_strText = "";
}

CXInListEdit::CXInListEdit(int nRow,int nCol,CString strText):m_strText(strText)
{
	m_nRow = nRow;
	m_nCol = nCol;
	m_bESC = FALSE;
}


BOOL CXInListEdit::PreTranslateMessage(MSG* pMsg)
{
	if( pMsg->message == WM_KEYDOWN )
        {
		SHORT sKey = GetKeyState( VK_CONTROL);
		if(pMsg->wParam == VK_RETURN
			|| pMsg->wParam == VK_DELETE
			|| pMsg->wParam == VK_ESCAPE
			|| sKey
			)
			{
			::TranslateMessage(pMsg);
			/* Strange but true:
			If the edit control has ES_MULTILINE and ESC
			is pressed the parent is destroyed if the 
			message is dispatched.  In this 
			case the parent is the list control. */
			if( !(GetStyle() & ES_MULTILINE) || pMsg->wParam != VK_ESCAPE )
				{
				::DispatchMessage(pMsg);
				}
			return TRUE;                    // DO NOT process further
			}
        }
	
	return CEdit::PreTranslateMessage(pMsg);
}

void CXInListEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if( nChar == VK_ESCAPE || nChar == VK_RETURN)
	{
		if( nChar == VK_ESCAPE )
			m_bESC = TRUE;
		GetParent()->SetFocus();
		return;
	}
	
	CEdit::OnChar(nChar, nRepCnt, nFlags);
	
	// Resize edit control if needed
//	CalculateSize();
}

int CXInListEdit::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CEdit::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// Set the proper font
	CFont* font = GetParent()->GetFont();
	SetFont(font);
	
	SetWindowText( m_strText );
	SetFocus();
	CalculateSize();
	SetSel( 0, -1 );
	return 0;
}

BEGIN_MESSAGE_MAP(CXInListEdit,CEdit)
	ON_WM_CHAR()
	ON_WM_CREATE()
END_MESSAGE_MAP()

void CXInListEdit::CalculateSize()
{
	CString str;
	
	GetWindowText( str );
	CWindowDC dc(this);
	CFont *pFont = GetParent()->GetFont();
	CFont *pFontDC = dc.SelectObject( pFont );
	CSize size;
	
	// Get client rect
	CRect rect, parentrect;
	GetClientRect( &rect );
	GetParent()->GetClientRect( &parentrect );
	
	// Transform rect to parent coordinates
	ClientToScreen( &rect );
	GetParent()->ScreenToClient( &rect );
	
	if( !(GetStyle() & ES_MULTILINE ) )
	{
		size = dc.GetTextExtent( str );
		dc.SelectObject( pFontDC );
		size.cx += 5;                           // add some extra buffer
	}
	else
	{
		CRect thinrect( rect );  // To measure the skinniest text SPAbox
		CRect widerect( rect );  // To measure the wides text SPAbox
		widerect.right = parentrect.right;
		// Use the shortest of the two SPAbox sizes.
		int thinheight = dc.DrawText( str, &thinrect, DT_CALCRECT|DT_NOPREFIX|DT_LEFT|DT_EXPANDTABS|DT_WORDBREAK );
		int wideheight = dc.DrawText( str, &widerect, DT_CALCRECT|DT_NOPREFIX|DT_LEFT|DT_EXPANDTABS|DT_WORDBREAK );
		if( thinheight >= wideheight )
		{
			size.cy = wideheight + 5;
			size.cx = widerect.right - widerect.left + 5;
		}
		else
		{
			size.cy = thinheight + 5;
			size.cx = thinrect.right - thinrect.left + 5;
		}
	}
	
	// Check whether control needs to be resized
	// and whether there is space to grow
	int changed = 0;
	if( size.cx > rect.Width() )
	{
		if( size.cx + rect.left < parentrect.right-2 )
			rect.right = rect.left + size.cx;
		else
			rect.right = parentrect.right-2;
		changed = 1;
	}
	if( size.cy > rect.Height() )
	{
		if( size.cy + rect.top < parentrect.bottom-2 )
			rect.bottom = rect.top + size.cy;
		else
		{
			rect.bottom = parentrect.bottom-2;
			ShowScrollBar( SB_VERT );
		}
		changed = 1;
	}
	// If the size became larger rposition the window.
	if( changed )
		MoveWindow( &rect );
}
